#define _CRT_SECURE_NO_WARNINGS   1

#include<stdio.h>
#include<stdlib.h>
typedef int BinaryTreeType;
typedef struct BinaryTreeNode {

	BinaryTreeType x;
	struct BinaryTreeNode* left;
	struct BinaryTreeNode* right;


}BTNode;

BTNode* BuyNode(BinaryTreeType x);
void PrePrint(BTNode* root);
